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<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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<body>
  <script>

    const x = 1;
    const y = 2;
    const z = 3;

    // z = y = x = 2 + 3;
    x = 2 + 3;
    y = x;
    z = y;

  </script>
</body>

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